Michael jljinsky



(No Model.

M JLJNSKY. PETROLEUM LAMP POB. PHOTOGEAPEIG PURPOSES.

Pate'nthedApr. 22, 1890.

INVENTOR:

WITNESSES:

ma new; Pneus no., wam-umu., msnmmon, n. cA

UNITED STATES PATENT OEEICE.

MICHAEL JLJINSKY, OE CHARLOTTENBURG, PRUSSIA, GERMANY.

PETROLEUM-LAMP FOR PHOTOGRAPHIC PURPOSES.

SPECIFICATION forming part of Letters Patent No. 426,023, dated April22, 1890.

Application led March 23, 1889. Serial No. 304.475. (No model.)

To all wiz/0m, t may concern;

Bc it known that I, MICHAEL JLJINSKY, a subject of the Emperor ofRussia, residing at Charlottenburg, near Berlin,Prussia, Germany, haveinvented certain new and useful Improvements in Petroleum-Lamps forPhotographic and other Purposes, of which the following is aspecification.

` The object of this invention is to provide a lamp for photographicpurposes which by its peculiar construction combines a number ofproperties not heretofore combined in any lamp, and which will be ofgreat value to photographers. This new lamp burns ordinary petroleum-oiland is intended to be used for all work which is performed in aphotographers dark-room, as well as for illuminating in the common way,and also for enlarging pictures in the camera. It is very convenient andeffective for producing hash-light with magnesium powder, whichheretofore has not been accomplished with a petroleumlamp. Whilepossessing these properties, it is also a compact and simple lamp fortraveling, as it can be safely packed even when iilled withpetroleum,which is prevented from leaking out by means which areprovided for that purpose.

Figure l is a vertical axial section cut in the plane of the line l 1 inFig. 2. Fig. 2 is a plan, partly in horizontal section, cut on line 2 2in Fig. l. Fig. 3 is a detached vertical section, on a large scale, ofthe magnesiumflash device.

Let A represent the lamp, B the burner, and C the chimney. Upon thepetroleumbasin a is screwed at b an Argand burner of any knownconstruction. The lower portion of the wick occupies a concentricsieve-cylinder c, mounted on the bottom of the basin a. The ring-shapedspace between the sieve c and the wall -of the basin a contains anelastic absorbent material d--such as common sponge--which is saturatedwith petroleum, and upon. which rests the metal ring c, bearing twovertical rods g g, which latter slide through suitable openings in thefootplate f of the burner, and can be arrested in any position andreleased. again by a locking device g of any suitable construction.

Then using the lamp, the ring e is forced down upon the sponge dbypushing down the rods g, and the petroleum is thereby driven out of thcsponge d and caused to flow through the sieve c to the wick and to feedthe iiame.

Then the lamp is to be prepared for travcling, the ring e is drawnupward by raising the rods g g, and the sponge d is relieved of thepressure of the ring c, and will again soak up or absorb all thepetroleum, so that even 6o in upsetting the lamp no fluid will leak outof the latter.

The lamp is provided with a clear glass chimney having a neck, (shown indotted lines at O,) and for dark-room work it is provided with acylindrical chimney C of a ruby or other color. In packing thelamp in abox or case the clear chimney C', the upper portion of which is smallerthan the lower part, is pushed into the ruby chimney C. A cylin- 7odrical shade 'L' surrounds the perforated basket 7L of the burner,descending low enough to interrupt any white light which may shinethrough the openings of the basket.

The application of a light-intercepting cap C on top of the ruby chimneycompletes the arrangements for adapting the lamp for use in theldark-room. Vhen the ruby chimney is replaced by the clear one, the lampis ready for all purposes for which a clear light may be So used. Forcopying and magnifying a more intense light is required, and this isattained by the employment of a reflector g', the stem p of which issupported by the socket r, provided in a suitable place on the shade c'.85

lleretofore a magnesium Hash-light has not been produced by means of apetroleum-lamp. My new lamp produces such light with the greatest easeand with a very small quantity of 1nagnesium-powder. A narrow pipe j,pen- 9o etrating from outside the burner-basket 7l, terminates at anacute angle flush with the burner-ring 7.1, and is connected at thelower end with a device Z for containing' the magnesium-powder and fordelivering it to the air-stream of any convenient blowing device. Uponthe short tube fm, one end of which is connected with the pipe j and theother end of which is connected by a rubber hose with a blower orpneumatic bulb, (shown in dotted loo lines at 11,) is mounted ameasuring or distributing cock n, which is in communication with themagnesium holder orfunnel o. The plug of the cock n contains tworecesses opposite each other and corresponding with the funnel 0 andwith the canal leading from the cock fn, to the tube fm. Each recess inthe plug serves as a measure for the magnesiumpowder and has a capacitywhich is sufficient for one flash.

The operation of the device is as follows: After having inserted aquantity of-the magnesium-powder into the funnel o and closed its cover,the plug, the upper recess of which has been filled with powder, isturned onehalf of a revolution, so that this recess is brought to thelower side of the plug, wherei upon the magnesium-powder contained inthis recess will drop out of the recess and fall into the tube m. Astream of air forced through the tube m will blow the powder through thepipejinto the flame of the lamp, whereupon the powder will ignite andproduce a brilliant iiash of light, by which instantaneous photographscan be obtained. In such aprocess the lamp is used iirst forilluminating the object to be photographed, so that the focusing can bemade, and then for iiashing.Y

of the instantaneous iiashing process heretoforensed. Therefore picturestaken with my new lamp represent the persons more at ease and morenatural than those taken with flashing apparatus at present in use. Theburnt magnesium or the magnesia-dust is deposited on the inside wall ofthe chimney, from which it can be easily removed when desired, andtherefore it is not annoying in the least. While the lower recess of theplug is delivering its contents, the upper recess is being filled withpowder, so that by a half-turn of the plug and the further operation ofthe airblower a second flash may be produced, if desired. The operatoris therefore enabled at will to produce only one or a series of flashes,as the work requires.

Although I prefer to use a sponge for absorbing the oil in theoil-vessel of the lamp, any other elastic absorbent material may be usedinstead-such, for example, as loose or braided cotton, excelsior, wool,or strips of clot-h.

For the sake of completeness the boX or canister in which the lamp ispacked for transportation contains separate compartments for storing therubber hose and a bulb or any other air-forcing apparatus and a boX forthe magnesium-powder.

Having thus described my invention, what I claim as new, and desire tosecure byLetters Patent, is the following-defined novel features andcombinations, substantially as herein set forth and shown, namely:

1.7In a lamp, the combination, with the oilvessel and the wick, of anelastic absorbent material within the oil-vessel and means forcompressing such absorbent material, whereby when the latter is freefrom pressure the oil is absorbed within the material, and when it iscompressed the oil is driven out thereof and feeds the wick.

2. In a lamp, the combination, with the oilvessel and the wick, of anelastic absorbent material within the oil-vessel and means forcompressing such absorbent material, whereby when the latter is freefrom pressure the oil is absorbed within the material, and when it iscompressed the oil is driven out thereof and feeds the wick, and a wickchamber within said oil-vessel and separated therefrom by a perforatedwall, whereby the wick and said absorbent material are kept out ofcontact each with the other. l

3. In a lamp, the combination, with the oilvessel and the wick, of anelastic absorbent material within the oil-vessel and a presserplate insaid oil-vessel and adapted to act against such absorbent material, anda presser-rod for moving such presser-plate against and from suchmaterial, whereby upon moving the presser-plate against such materialthe oil will be discharged therefrom and will feed the wick, and onmoving the presserplate away therefrom the oil will be absorbed therebyand be removed from contactwith the wick.

et. In a lamp, the combination, with the oilvessel and the wick, of anelastic absorbent material within the oil-vessel and a presserplate insaid oil-vessel and adapted to act against such absorbent material, anda presserlrod for moving such presser-plate against and from suchmaterial, whereby upon moving the presser-plate against such materialthe oil will be discharged therefrom and will feed the wick, and onmoving the presserplate away therefrom the oil will be absorbed therebyand be removed from contact with the wick, and a catch for locking saidpresserrod in position.

5. In a lamp, the combination, with the oil vessel, wick, and burner, ofa perforated basket surrounding the burner and a shade surrounding suchbasket and adapted to interrupt the rays of light which escape throughthe perforations thereof.

6. In a lamp, the combination, with the burner, of a Hash-light tubeextending from the exterior of the burner and terminating adjacent tothe iiame, and a receptacle for the flash-powder communicating .withsaid tube and adapted to deposit the iiash -powder therein, and a valvebetween such receptacle and said tube for controlling the admission offlash-powder into the latter.

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7. In a lamp, the combination, with the p burner, of a dash-light tubeextending from the exterior of the burner and terminating adjacent tothe flame, and a receptacle for the dash-powder communicating with saidtube and adapted to deposit the ,iiash powder therein, and a Valvebetween such receptacle and said tube for controlling the admission ofHash-powder into the latter, having a measuring-recess for deliveringsaid powder and movable to bring said recess into communication Withsaid receptacle When the Valve is in one position and with said tubewhen in another position.

8. In a petroleum-lamp for photographic purposes, the petroleum of whichis contained in an elastic absorbent inateriahthe combination, with theoil-vessel and burner, of a clear

